Arm chair



FIG. 1 is a perspective view of my arm chair;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view, the left side (not shown) is a mirror image thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a top view of my arm chair. 

CLAIM I claim the ornamental design for an arm chair, as shown and described. 